Within any workspace you can create sub folders under the 'Documents' tab. Simply click on the 'New Folder' button on the right and enter the name of the folder. It will then create a folder in the current position. Click on the folder to enter the folder and upload files. You can create folders within folders.
If you want to move a folder simple select the checkbox next to the folder name, and then select from the pop-up menu 'Move'

You'll then be presented with a list of workspaces (and folders within) - just select the Workspace (and sub folder if you wish) and then hit 'Move files'
GlassCubes does not support Internet Explorer 6. Upgrade to a newer version or download and use an alternative browser from the links below: FireFox Safari Google Chrome Latest IE
IE6 was released in 2001 - its very old, has many security weaknesses and you are very susceptible to virus, phishing, harmware.